For the U.S., Kerry is to sign the agreement Friday and then President Obama will ratify it before he leaves office in December, a senior U.S. official told CBS News in a conference call this week.
Time Frame. The average dolphin species can stay underwater for as long as eight to 10 minutes; some can remain submerged while holding their breath for 15 minutes. Dolphins breathe through their blowhole, which has a muscular flap that covers it when they go under water, keeping water out of their lungs. Size.
How long can an humpback whale hold its breath? 3omillion seconds Humpbacks have been known to be down longer than 45 minutes, diving several hundred feet. When they rise, they exhale very loudly while sending a plume of coâ¦oled air up to 20 feet.